影像科学与光化学 ›› 1989, Vol. 7 ›› Issue (1): 24-29.DOI: 10.7517/j.issn.1674-0475.1989.01.24

• 研究论文 • 上一篇    下一篇

苯、萘、蒽及其衍生物的荧光光谱及激发态性能的计算研究

钱旭红, 陈孔常, 朱正华   

  1. 华东化工学院精细化工研究所 上海 201107
  • 收稿日期:1987-07-28 修回日期:1988-03-07 出版日期:1989-02-20 发布日期:1989-02-20
  • 通讯作者: 朱正华

THE CALCULATION OF FLUORESCENCE AND PROPERTIES IN EXCITED STATES OF BENZENE, NAPHTHALENE, ANTHRACENCE, AND THEIR DERIVATIVES

QIAN XU-HONG, CHEN KONG-CHANG, ZHU ZHENG-HUA   

  1. Research Institute of Fine Chemicals, Eait China University of Chemical Technology, Shanghai 201107 P. R. China
  • Received:1987-07-28 Revised:1988-03-07 Online:1989-02-20 Published:1989-02-20

摘要: 根据Franck-Condon原理,用PPP-SC(β,γ)-CI方法在IBM-PC微机上,对苯、萘、蒽的衍生物的荧光性质以及基态和第一激发单重态在键级、偶极矩、π电子总能量上的差异进行了研究。发现最大荧光波数VF.L.与荧光辐射能△FV.L.、荧光量子产率φ与基态、第一激发单重态间的π电子能量差(Egπ-Eeπ)存在着以下的关系: 上述F.L.表示荧光,g表示基态,e表示激发态。由此得出的理论计算值与实验值有着良好的一致性。

关键词: 分子轨道, 荧光光谱, 偶极矩, 荧光量子产率, 激发态

Abstract: According to Frack-Condon principle, the fluorescence and the difference between ground state and the first excited singlet state in bond order, dipole moment, total π electronic energy of benzene, naphthalene, anthracene, and their derivatives have been studied with PPP-SC(β, γ)-CI method on IBM-PC microcomputer. It is found that there are good correlated relationship between fluorescence maxima vF.L. and fluorescence emission energy △EF.L., fluorescence quantum yield φ, and total n electronic energy difference between ground state and the first excited singlet state: vF.L.= 9.5498△EF.L. + 22.5835(kcm-1) r = 0.9480 logφ= 0.3583(Egx - Eex)+ 1.5351 r = 0.9509

Key words: molecular orbit, fluorescence spectra, dipole moment, fluorescence quantum yield, excited state